EPA Administrator Scott Pruitt has a choice between finalizing a Clean Power Plan repeal and coming up with a replacement at a later date, or rolling out a finalized repeal and a proposed replacement at the same time. He could also decide not to replace the rule, an outcome favored by a number of far-right conservatives but widely seen as the most legally vulnerable option.

EPA isn’t commenting about which course of action it’s planning, though the agency is further along on finalizing a repeal, while it has yet to issue a proposal to replace the Clean Power Plan.